Optimizing levels with VisAreas and Portals

The VisArea is used to define indoor areas, which have their own ambient color. You can also create indoor areas without this object; however, you will not be able to achieve completely dark or black lighting conditions. The bright, outdoor, ambient lighting affects indoor areas that do not contain a VisArea. Some important points to understand about VisAreas are as follows:

• Objects inside a VisArea won't be rendered from the outside

• VisAreas help to isolate lightning conditions inside rooms

• Using Portals, you can cut holes inside the VisAreas

• When using Portals they must be smaller than the VisArea shape

• You can enable/disable Portals via Flow Graph

• You can have multiple Portals in one VisArea